A pair gas block set screws with knurled tip. The knurled tip screws bite into the surface of the barrel and in combination with Loctite 271 will not back out even under heavy use. I recommend de-greasing the threads of the screws and gas block as well as dimpling your barrel with a quality dimpling jig before installation.
Do not reuse knurled tip screws as the tips will blunt and not hold as designed. These are a perfect replacement for gas block set screws with smooth cup or pointed tips if your gas block comes with the wrong type.
Will work in any gas block that takes #10-32 (.190″) X 3/16″ set screws. Some blocks use larger screws so double check before ordering.
Hex drive size: 3/32″
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